DocumentCode
2233156
Title
Vector Quantizer design by conjugate gradient optimized hyperplane
Author
Kam-Tim Woo ; Kam-Fai Chan ; Chi-Wah Kok
Author_Institution
Dept. EEE, Hong Kong Univ. of Sci. & Technol., Kowloon, China
fYear
2002
fDate
3-6 Sept. 2002
Firstpage
1
Lastpage
4
Abstract
An Vector Quantizer design method by adaptive hyperplane generation using conjugate gradient optimization is proposed. The generated hyperplane is a perpendicular bisector of the clustering set centroids at each stage of the K-dimensional search tree, thus eliminated misclassification error associated with hyperplane based vector quantization. Simulation results on Vector quantization image coding is presented and compared with that obtained by other algorithms in literature. Where the results showed that the proposed algorithm can achieve better PSNR image coding results than that obtained by other algorithms. The generated K-dimensional search tree vector quantizer facilities computational efficient quantization process.
Keywords
conjugate gradient methods; image coding; image denoising; pattern clustering; tree searching; vector quantisation; K-dimensional search tree vector quantizer; PSNR image coding; adpative hyperplane geneartion; clustering set centroid perpendicular bisector; conjugate gradient optimized hyperplane; misclassification error eliminated; vector quantization image coding; Abstracts; Boats; Clocks;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing Conference, 2002 11th European
Conference_Location
Toulouse
ISSN
2219-5491
Type
conf
Filename
7071973
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